1411 results about "Rotary valve" patented technology

The servo valve comprises an outer shell, a valve assembly is arranged in the outer shell, the valve assembly is connected with a nested antler channel, and the nested antler channel is used for being connected with hydraulic equipment; the valve assembly comprises a rotary valve rod, a valve element and a valve sleeve, the axis of the rotary valve rod is perpendicular to the axis of the valve element, the valve element is coaxially and movably arranged in the valve sleeve, the bottom of the rotary valve rod is connected with a crankshaft, the crankshaft is sleeved with a first bearing, and the valve sleeve is arranged in the nested antler channel. A plurality of through holes used for being communicated with the nested antler channels are formed in the valve sleeve in the axial direction of the valve sleeve, a movable groove matched with the crankshaft is formed in the middle of the valve sleeve in the radial direction, a kidney-shaped mounting hole matched with the first bearing is formed in the valve element, and the length direction of the kidney-shaped mounting hole is perpendicular to the axial direction of the valve element. And at least one annular sleeve is fixedly arranged on the valve element and located on the two sides of the mounting hole in a sleeving mode, the annular sleeves are used for blocking the through holes in different positions, and the valve rod has the advantages that abrasion of the valve rod is reduced, and the service life is prolonged.

The utility model provides a quick-connection ball valve which comprises two ball valves, the two ball valves are in linear clamping connection, each ball valve is provided with a through hole for fluid to pass through, each ball valve comprises a valve body, a valve element is arranged in each valve body, each valve element is connected with a valve rod, the end, away from the corresponding valve element, of each valve rod extends out of the corresponding valve body, and the end, extending out of the corresponding valve body, of each valve rod is connected with a handle. The handle drives the valve element to rotate through the valve rod. And the valve body is provided with a locking device. The locking device comprises a locking groove and a locking column; the handle is in driving connection with the locking column. When the handle is closed, the locking column is arranged in the valve body; when the two ball valves are in butt joint and the handle is opened, the handle drives the locking column to stretch into the locking groove of the other ball valve, the locking device locks the two ball valves, the two ball valves are prevented from rotating and disengaging, fluid leakage caused by looseness is avoided, and the safety of valve body connection is improved.

Process for feeding plastic material, e.g. a plastic waste, to a processor such as a thermochemical reactor, e.g. a pyrolysis reactor. The process comprises an optional shredder or disintegrator (1), a conveying system (2), a feed hopper (3) with a lock hopper or rotary valve, a melting tank (6) with an agitator (5) followed by a melt pump (7) for the delivery of molten plastic to the processor. The advantage of the current process includes the ability to supply a consistent, metered flow to the processor, independent of the recycled plastic's melt properties, or the form or particle size and distribution of the plastic material.

The invention discloses a multi-channel airflow distribution rotary valve applied to a molecular sieve oxygen generation bottom valve and overhead valve combination, and belongs to the technical field of airflow switching rotary valves. The top valve and the bottom valve are vertically arranged and installed on the fixing frame, a first valve cavity is formed in the top valve, and a second valve cavity is formed in the bottom valve; the bottom valve is provided with an air inlet communicated with the second valve cavity; the overhead valve and the bottom valve are communicated with the adsorption tower A, the adsorption tower B, the adsorption tower C and the adsorption tower D; the first control mechanism and the second control mechanism are arranged in the first valve cavity and the second valve cavity respectively; and the driving part is located between the bottom valve and the top valve, the first end of the driving part is in driving connection with the first control mechanism, and the second end is in driving connection with the second control mechanism. The bottom valve is mainly used for air intake and desorption; the overhead valve is mainly used for oxygen outlet and air outlet end pressure equalizing, the driving part drives the first control mechanism and the second control mechanism to rotate, cost is low, performance is stable, the system integration degree is high, and stability is achieved.

The invention relates to the technical field of glaze pretreatment in the field of glass processing, and discloses a multifunctional glass glaze filtering and stirring machine. Comprising a filtering stirrer control screen, a lifting frequency control spring, a rotary valve, a glass glaze adding funnel, a switch valve, a stirring head, a gauze replacing valve, a glass glaze barrel, a filtering stirrer bracket and a filtering stirrer fixing balance rod, a glass glaze barrel is arranged on the filtering and stirring machine support and is connected with a barrel cover through threads, a glass glaze adding funnel is arranged on the barrel cover, and a switch valve is arranged on a channel of the glass glaze adding funnel; the filtering stirrer control screen is arranged on the filtering stirrer bracket and is at least provided with an ascending button, a descending button and a rotating button; and the lifting frequency control spring is arranged above the barrel cover. The invention provides integrated and automatic multifunctional equipment, efficient filtering is achieved in the stirring process, and meanwhile the problems of blockage, pollution and parameter adjustment are solved.

The present invention discloses a dynamic composite distortion simulator and a working method thereof in the technical field of aero-engine air inlet and engine matching. The simulator comprises a process air inlet, a spoiler column, a rotary valve and a high-speed motor. The spoiler column is installed inside the process air inlet, and the rotary valve is installed in the cavity of the spoiler column. One end of the rotary valve extending out of the spoiler column is connected to the high-speed motor. Dynamic distortion vortices are formed by utilizing the flow around the column and the rotary valve, and parameters such as the intensity and scale frequency of the vortex change with changes in the motor speed and the angle of attack and height of the spoiler column. This can effectively simulate the dynamic distortion flow field structure generated in the air inlet due to various reasons, overcome the shortcomings of existing simulators in simulating dynamic distortion, form a flow structure similar to the distortion flow field at the outlet of the real air inlet, so as to more realistically simulate the air inlet matching process, significantly improve the experimental efficiency and accuracy, and do not require an external air source.

According to the nucleic acid extraction and detection device and the use method, by forming a plurality of communicating holes and taking a rotary valve as a communicating medium, communication among functional chambers is achieved, then sample transfer is achieved, the whole transfer process is completed in an internally-closed environment, sample pollution is not caused, and the detection efficiency is improved. The rotating cover and the rotating valve rotate synchronously, and the rotating cover is also closed when the rotating valve is closed, so that the sealing performance of the cavity in the uniform mixing and reaction process is ensured, and the stability of a pre-stored reagent and the safety of the reaction process are ensured; the sample transfer step is reduced, the pollution risk is reduced, the whole process is completed only through manual operation without a power supply or other equipment, and the method can be used for household self-inspection or in areas with limited resources or even in extreme environments without power supply.

According to the technical scheme, the underwater rotary hydraulic proportional valve is characterized in that the underwater rotary hydraulic proportional valve comprises a valve body, a steel sleeve, a shell, a coil, a magnet yoke, a stator iron core, an inner end cover, a sealing ring a, a dustproof screw, a sealing ring b, a rotary transformer, a permanent magnet, a sealing ring c, a valve sleeve, a valve element, a bearing and a sealing ring d, and is characterized in that a plurality of hydraulic oil ports are formed in the valve body; the hydraulic oil port is communicated with the oil port through the multiple valve cavities, the shell is installed at one end of the valve body, a driving cavity is formed in the shell, and the valve element and a rotating shaft of the motor are integrated. The wet-type limited angle torque motor is adopted to drive the rotary valve and the valve element to rotate, a motion conversion device is omitted, the valve element and the valve sleeve rotate relatively, friction force is small, the anti-pollution capacity is high, the axial leakage problem does not exist, a motor shaft of the limited angle torque motor can rotate within a limited angle range, and the advantages of being convenient to control, large in torque density, high in reliability and the like are achieved. And the method is simple and reliable.

The cooling module includes: a manifold being made of resin and including a plurality of housings joined to one another; and a rotary valve formed by arranging a valve body rotating about a rotation axis in a cylindrical valve chamber formed in the manifold. The manifold includes a plurality of internal flow paths through which fluid flows and a plurality of ports that are connected to a plurality of the internal flow paths and through which the fluid flows in or flows out. The rotary valve has a full communication mode in which, when the fluid is flowed in from one port of a plurality of the ports, the fluid can be flowed out from all the other ports.

The invention relates to an efficient and energy-saving system for continuously removing VOC (Volatile Organic Compounds) from a polypropylene material. The system comprises a, a feeding device; the ridge tower sequentially comprises a preheating section, a devolatilization section, a pre-cooling section and a cooling section from top to bottom, a middle rotary valve is arranged between the pre-cooling section and the cooling section, and the preheating section, the devolatilization section and the pre-cooling section are used for conducting preheating, devolatilization and pre-cooling treatment on the PP particles under the action of heated nitrogen; a feeding rotary valve is arranged at the top of the ridge tower, and a discharging rotary valve is arranged at the bottom of the ridge tower; the nitrogen generating device and the heater are respectively used for generating and heating nitrogen so as to provide hot nitrogen required by devolatilization treatment; a heating section fan is arranged between the nitrogen generating device and the heater; d, a cooling section fan is used for further cooling the pre-cooled PP particles; and e, a middle rotary valve and a discharging rotary valve. The VOC in the polypropylene granules is reduced to be less than 50ppm through nitrogen operation, and the odor grade is less than 4.0. Finally, the VOC content in the polypropylene is reduced, meanwhile, the odor grade is reduced, and the quality of the polypropylene resin is improved.

The present application discloses a method for detecting the position of a rotary valve of a food processing machine. The food processing machine includes a rotary valve provided with a magnet, a linear Hall, and a signal control unit electrically connected to the linear Hall. The method includes at least: a signal acquisition stage: the signal control unit acquires the magnetic field strength signal of the magnet during the rotation of the rotary valve through the linear Hall; a signal processing stage: the signal control unit calculates and compares a plurality of the magnetic field strength signals to obtain the change trend of the magnetic field strength signal, and the change trend includes the critical jump of the magnetic field strength signal; a signal recognition stage: the signal control unit recognizes that the rotary valve has turned to the set position according to the critical jump. Through the technical solution of the present invention, the rotary valve can be accurately identified to reach the set position according to the critical jump, eliminating the influence of the rotary valve position deviation, and can also detect the situation of rotary valve blocking to avoid misjudgment.

The invention relates to the technical field of well cementation operation, in particular to an automatic well cementation multi-channel integrated control device which comprises a main valve body, a rotary valve element, a gland and a driving device, the main valve body is provided with a mounting cavity with an upward opening, the rotary valve element with the upper end located above the mounting cavity is arranged in the mounting cavity, and the rotary valve element is rotationally connected with the main valve body; the rotary valve element is provided with a communicating cavity with a downward opening, a gland fixedly installed together with the outer side of the upper end of the main valve body is arranged on the outer side of the upper portion of the rotary valve element, the rotary valve body is rotationally connected with the gland, and a driving device capable of driving the rotary valve element to rotate is arranged at the upper end of the rotary valve element. The quick switching valve is reasonable and compact in structure and convenient to use, through holes in different positions communicate with the communicating cavity by rotating the rotary valve element, and therefore quick switching of different working solutions is achieved; the forward blades and the reverse blades are arranged, so that two paths of cement paste are fully and uniformly mixed; and by arranging the station display device, the current working state is visually displayed, and the device has the characteristics of stability, reliability and high efficiency.

The invention provides a low hydraulic power rotary valve structure with an anti-clamping stagnation clutch, which comprises a valve sleeve (1), an outer valve core (2), an inner valve core (3), a ball (4), a pressing plate (5) and a spring (6), and the inner valve core (3) is connected with a motor rotating shaft and rotates along with the motor rotating shaft; the outer valve element (2) is arranged on the outer side of the inner valve element (3) in a sleeving mode from the bottom of the inner valve element (3), and the valve sleeve (1) is arranged on the outer side of the outer valve element (2) in a sleeving mode from the bottom of the outer valve element (2). A plurality of V-shaped grooves are evenly distributed in the circumference of the end face of the top of the outer valve element (2), balls (4) are arranged in the V-shaped grooves, a motor rotating shaft is sleeved with the pressing plate (5) and the spring (6), and the spring (6) presses the balls (4) through the pressing plate (5) so that the bottom of the outer valve element (2) can make contact with the internal storage bottom of the valve sleeve (1). An oil way on the outer valve core (2) is the same as that of the valve sleeve (1) and is used for realizing oil way communication between the valve sleeve (1) and the inner valve core (3); when the inner valve element (3) and the outer valve element (2) are clamped, the outer valve element (2) can overcome the elastic force of the spring (6) by increasing the input torque of the motor rotating shaft, so that the inner valve element (3) and the outer valve element (2) are driven to rotate at the same time to ensure that the function of the rotary valve is normal, and clamping is prevented.

The utility model belongs to the technical field of material conveying, and particularly relates to a water cooling structure and a water cooling system of a rotary valve and the rotary valve, the water cooling structure of the rotary valve comprises 13 cooling water channels, and a transmission shaft cooling water channel is arranged in a transmission shaft; the working side flange and the transmission side flange are respectively provided with a working side flange cooling water path and a transmission side flange cooling water path; the working side stuffing box and the transmission side stuffing box are respectively provided with a working side stuffing box cooling water path and a transmission side stuffing box cooling water path; eight shell cooling water ways are distributed in the inner partial area of the rotary valve shell. According to the rotary valve, a reasonable water cooling structure with multiple cooling waterway partitions is adopted, partition arrangement of the water cooling structure is optimized, the problems of cooling dead zones and large resistance loss of the cooling waterways caused by unreasonable water waterway partitions are solved, cooling efficiency and high temperature resistance are improved, and reliability of the rotary valve is further improved.

The present disclosure provides a double-tank oral irrigator. The double-tank oral irrigator includes a rotary valve, a first tank, a second tank, a water guide pipe, and a pump assembly. The rotary valve includes an outlet part, a first inlet part, a second inlet part, and a valve core. The rotation of the valve core enables adjustment of the sealing degree of the valve core to the first inlet part and the second inlet part. The first inlet part is connected to the first tank, the second inlet part is connected to the second tank, and one end of the water guide pipe is connected to the outlet part. The pump assembly is connected to the other end of the water guide pipe and a spray outlet of the oral irrigator.

A coolant control valve is provided that includes an actuator, a rotary valve body, a valve housing, a seal housing, and a movable seal. The rotary valve body is rotatably actuated by the actuator and includes at least one fluid opening. The movable seal is arranged within an annular groove of the seal housing and is: i) sealingly engaged with the annular groove, and ii) forcibly sealingly engaged with the rotary valve body via a force generator. The force generator is arranged radially adjacently to the movable seal within the annular groove.

The invention discloses an upper pressure inlet type eccentric rotary valve, and relates to the technical field of upper pressure inlet type valves. An upper pressure inlet type eccentric rotary valve comprises a valve body, the valve body comprises a liquid inlet flow channel, a liquid flow channel and a liquid outlet flow channel which are internally communicated in sequence, the liquid flow channel is provided with a sleeve, the sleeve is provided with a liquid inlet port and a liquid outlet port, the liquid inlet port is communicated with the liquid inlet flow channel, and the liquid outlet port is communicated with the liquid outlet flow channel; the liquid inlet port is provided with a valve core, the valve body is provided with a valve cover, the valve cover is provided with a control mechanism connected with the valve core, and the control mechanism is configured to be capable of driving the valve core to rotate so as to open / close the liquid inlet port; the valve element is provided with an opening position and a closing position, and liquid entering the liquid inlet flow channel moves towards the liquid outlet flow channel through the sleeve and impacts the valve element so that the valve element can move from the opening position to the closing position. The invention has the function of being easy to open but not easy to close.

A hydraulic pulse-type soluble segmented acid fracturing slide sleeve and a pulse acid fracturing construction method. The slide sleeve comprises a slide sleeve outer cylinder (1) and a rotary valve assembly, and flow-passing holes (101) are formed on the slide sleeve outer cylinder (1); the rotary valve assembly comprises a valve core (2) and a valve ball (13), and the valve ball (13) can block a passage (203); a flow guide channel (206) and flow splitting channels (207) are formed between the outer wall of the valve core (2) and the inner wall of the slide sleeve outer cylinder (1); the slide sleeve outer cylinder (1) has a first position and a second position in the axial direction; when the valve core (2) is located at the first position, the outer wall of the valve core (2) blocks the flow-passing holes (101); an acid fracturing working fluid flowing through the flow guide channel (206) can push the valve core (2) to move from the first position to the second position along the slide sleeve outer cylinder (1), and push the valve core (2) to continuously rotate at the second position, so that the flow splitting channels (207) are alternately communicated with the flow-passing holes (101), the acid fracturing working fluid is discharged from the flow-passing holes as hydraulic pulses, hydraulic pulses with a proper frequency can be excited at the bottom of a well, energy attenuation is reduced, and the formation of a complex fracture network is promoted in a stratum.

The present invention discloses a rotary valve, which includes: a valve body, which is a cylindrical structure, and is provided with three flow channel groups; and a valve sleeve, whose coaxial sealing sleeve is provided on the valve body, and the valve sleeve is evenly provided with multiple through holes, the inner end of each through hole extends to form a vertical groove, and the vertical groove is divided into three sections along the vertical direction, corresponding to the ports of different flow channel groups respectively. A switching valve is provided at the through hole, and the switching valve connects the through hole to the two sections of the vertical groove, thereby switching the corresponding two flow channel groups to a working state. The valve body rotates around the axis relative to the valve sleeve so that the multiple through holes are combined and connected with the ports of the two flow channel groups in the working state, thereby changing the process operation mode. Each through hole is connected to at most one port of the valve body. The present invention also discloses a pressure swing adsorption device. The rotary valve of the present invention can switch the working state of the flow channel group, realize online switching of the timing process, meet the demand for improvement of process conditions due to fluctuations in on-site raw materials, and enhance production flexibility.

Disclosed is a flow path switching device including: a case including a first nozzle into which fluid is introduced, a second nozzle through which fluid is discharged, a plurality of inner outflow pipes through which fluid supplied from the first nozzle flows, a plurality of inner inflow pipes through which the fluid supplied to the second nozzle flows, and a flow path connection portion in which a space is formed to communicate the plurality of inner outflow pipes with the first nozzle or to communicate the plurality of inner inflow pipes with the second nozzle; a valve rotatably disposed in the space of the flow path connection portion, and having a first chamber connecting one of the plurality of inner inflow pipes and the first nozzle according to placement, and a second chamber connecting one of the plurality of inner outflow pipes and the second nozzle; and a motor disposed in one side of the valve and rotating the valve. Each of the first nozzle, the inner outflow pipe, and the flow path connection portion forms a flow path perpendicular to each other inside. A first chamber hole connecting the first chamber and a nozzle flow path formed inside the first nozzle is formed in the valve. A cross-sectional area of the nozzle flow path is reduced to a size corresponding to the first chamber hole from an inlet portion of the first nozzle towards the flow connection portion.

The invention provides an automatic overpressure isolating valve based on a double-valve-clack structure, and the automatic overpressure isolating valve comprises a valve body which is internally provided with a cavity, and an inlet flange and an outlet flange are respectively arranged at two ends of the valve body; the guide shaft is arranged in the cavity, a cam and a flow guide seat are arranged on the two sides of the tail end of the guide shaft respectively, the guide shaft is sleeved with the flow guide seat, an upper guide sleeve and a lower guide sleeve are arranged at the two ends of the guide shaft respectively, the upper end of the guide shaft is sleeved with the front valve clack, the front valve clack is spirally connected with the upper end of the guide shaft, and the outer side of the front valve clack is connected with the upper guide sleeve. The cylindrical rotary valve clack is arranged at the lower end of the flow guide seat and matched with the cam to achieve rotation of the cylindrical rotary valve clack, the valve seat is arranged at the bottom of the flow guide seat and located below the cylindrical rotary valve clack, and the main spring is arranged on the guide shaft in a sleeving mode and located between the front valve clack and the lower guide sleeve. Double sealing of the valve body is achieved through the front valve clack and the cylindrical rotary valve clack, opening and closing of the valve are accurately controlled, sealing reliability is improved, and the leakage problem is avoided.

The utility model discloses an automatic vibration feeding and conveying system for a lithium iron phosphate production line, which comprises a discharge storage device and a conveying mechanism, a flow-aiding stirring device is arranged at the top of the discharge storage device, and a flow-aiding stirring device is arranged at the bottom of the discharge storage device. A first weighing sensor used for weighing materials is arranged in the discharging storage device, and a plurality of conveying mechanisms used for conveying the materials are arranged at the top of the discharging storage device. The conveying mechanism comprises a vibrating feeder, a first switch valve, an adjusting valve, a rotary valve, a second switch valve, a powder storage device, a second weighing sensor, a first ventilation device and a stirring device, the second switch valve is arranged at the bottom of the powder storage device, and the material flow can be accurately controlled; according to the vibrating feeder, it is ensured that the materials are conveyed at the stable and uniform speed, the risks of material accumulation and blockage are reduced, and damage to the materials is small in the conveying process of the vibrating feeder.

The application relates to a rotary valve, in particular a multi-way regulating valve, with a housing, which has at least one inlet connection and at least one outlet connection for a liquid and / or gaseous medium, with at least one valve element, which is rotatably mounted in the housing between the connections in order to set at least one desired flow cross-section, and with a control shaft, which is non-rotatably connected to the valve element, which control shaft is led out of the housing with a coupling end, through an opening in a housing wall of the housing, wherein the control shaft has a radial projection, which has an axial stop for making axial contact with an annular sealing protrusion of the housing wall, and with at least one sealing element acting between the control shaft and the housing. It is provided that the annular projection of the control shaft has at least one axial recess on the end face thereof facing the housing wall, which axial recess extends over a limited circumferential section of the end face to the radial outer edge of the annular projection, and that a chamber is formed between the annular projection, the control shaft, the housing wall, and the sealing projection, in which chamber the sealing element is arranged.

A multi-port rotary disc valve includes a valve housing and a diverter assembly disposed in the housing. The housing includes a sidewall, a lid that closes a first end of the sidewall and a base that is disposed at a second end of the sidewall. The diverter assembly is configured to control fluid flow through the valve housing and includes a lid-facing surface, a base-facing surface, and diverter through openings that extend between the lid-facing surface and the base-facing surface. The diverter assembly includes a first pocket that opens toward the lid and a second pocket that opens toward the base. Each of the first pocket and the second pocket may receive fluid flow directed in a first direction that is parallel to the diverter rotational axis and to reflect the received fluid flow in a second direction that is opposite the first direction.

The invention relates to the field of pressure valves, in particular to a proportional pressure valve with a self-adaptive non-return function. Comprising a valve body and a valve element, a first outlet and a second outlet which penetrate through the interior of the valve body are formed in the peripheral side of the valve body, a flow channel is formed in the valve element, annular valve cavities communicated with the two outlets are formed between the valve body and the valve element respectively, and a non-return structure is arranged in each annular valve cavity and comprises a fixed valve sleeve and a rotary valve sleeve. An inner hole is formed in the fixed valve sleeve, an outer hole is correspondingly formed in the rotary valve sleeve, a torsional spring is fixedly connected between the rotary valve sleeve and the fixed valve sleeve, and a pressed part is arranged on the outer side of the rotary valve sleeve. Through cooperative action of the rotary valve sleeve and the fixed valve sleeve, the pressed part triggers rotation under countercurrent high pressure to achieve staggered closing between the inner hole and the outer hole, meanwhile, the pressure relief channel is synchronously opened for rapid pressure relief and first-stage non-return, the inner hole and a flow channel are cut off in combination with the pressing ring, and second-stage non-return is conducted; and the stability and the safety of the proportional pressure valve under complex working conditions are improved.

The invention discloses a peritoneal drainage flushing device based on multi-dimensional parameter monitoring and a negative pressure regulation and control system, and belongs to the technical field of peritoneal drainage. The peritoneal drainage flushing device and negative pressure regulation and control system based on multi-dimensional parameter monitoring comprises a device support, a multi-channel rotary valve and two negative pressure pumps, a flow guide pipe and a backflow pipe are arranged between the two negative pressure pumps and the multi-channel rotary valve, and pipeline detection modules are installed on the flow guide pipe and the backflow pipe. The peritoneal drainage device solves the problems that an existing peritoneal drainage device is not ideal in treatment effect and affects the treatment effect when a drainage tube is blocked, early intervention is carried out by adjusting a negative pressure pump, a multi-channel rotary valve and a three-way electromagnetic valve, targeted treatment is automatically triggered at the early stage of complications through continuous and multi-dimensional monitoring, and the treatment effect is effectively improved. The tube blocking rate, the abdominal infection rate and the abdominal hypertension syndrome occurrence rate are remarkably reduced, the pain of a patient is relieved, the recovery time is shortened, and personalized and self-adaptive adjustment is carried out according to the physical state of the patient.

A coal-mine underground composite mud pulse measurement while drilling system and a method. The system comprises a rotary valve sub (1), a positive pulse sub (2), a drive sub (3), and a circuit conversion adapter (4) which are connected in sequence, wherein the rear end of the circuit conversion adapter (4) is sequentially connected to a battery cylinder sub and a measurement while drilling sub; the drive sub (3) can control a piston (204) in the positive pulse sub (2) to act so as to control blocking or opening of a conical flow channel to generate a positive pressure pulse; a measurement while drilling sub acquisition module can acquire a measurement parameter, and a measurement while drilling sub master control module can control working of a servo motor in the rotary valve sub (1), so that the overlapping area between stator flow passing channels (1031) and rotor flow passing channels (1044) in the rotating valve sub (1) changes periodically to form mud continuous pulses.

A kind of reciprocating compressor full-range control type rotary cup exhaust valve, including valve seat, valve core, valve rod and the like components, valve core and valve seat all adopt V cup type structure, valve core and valve rod adopt integrated structure, are controlled by rotary motion driving device full range, set the motion law of valve core, valve rod, execute acceleration, deceleration, waiting and brake and the like motion instruction, realize rotary valve opening and closing, rotary friction is small, sealing performance is good, long-term use wear can be automatically compensated, flow coefficient is big, resistance coefficient is small, the effective flow area of valve core and valve seat is more than 2 times of conventional plane-shaped meshed intake valve;The present application also has the characteristics of no impact, long stay time when fully open, overcome the essential defects of the prior art meshed exhaust valve, such as large resistance loss, valve piece impact is serious;The present application can be used for the modification of existing meshed exhaust valve, and can also be used as a complete set of exhaust valve for new reciprocating compressor.

A POCT cartridge, a POCT device, and a POCT method. The POCT cartridge comprises a cartridge body (100) and a rotary valve (200). The cartridge body (100) is provided with a sample loading cavity (101), a sample treatment cavity (102), a lysis liquid cavity (103), a magnetic bead liquid cavity (104), a cleaning liquid cavity (156), an eluent cavity (107), a rich solution cavity (108), a waste liquid cavity (109), a transfer cavity (110), a PCR cavity (1234), a power source cavity (115), and a ventilation cavity (116); a back surface of the cartridge body is further provided with a plurality of flow channels, and the power source cavity (115) is in communication with the transfer cavity (110). The rotary valve (200) is rotatably mounted on a front surface of the cartridge body (100), and the rotary valve (200) is provided with a valve liquid path (211), an exhaust gas path (221), and an exhaust structure (212). By rotating the rotary valve (200), the valve liquid path can be selectively brought into communication with the plurality of flow channels; in addition, under the action of a power source, various steps of sample addition, lysis, magnetic bead binding, cleaning, elution, mixing of a nucleic acid with a rich solution, and a PCR reaction can be completed.

A control valve and a thermal management assembly including the control valve are provided. The control valve includes a valve body component and a valve core; the valve body component is provided with interface channels, the valve core is provided with flow guiding channels, there are N flow guiding channels, and there are 2N interface channels, wherein N≥3 and N is an integer; by rotating the valve core, the 2N interface channels can implement communication between each two interface channels in different forms by the N flow guiding channels; in this way, when the control valve is applied to the thermal management assembly, the control valve can control multiple flow paths in the thermal management assembly by rotating the valve core.